sandy canceled the marathon last year and was on many hearts and minds like brian lang's. his home burned to the ground. in breezy point, the new york community devastated by floods and then fire. >> everything we owned was destroyed and to sit today in central park and complete the new york city marathon is so overwhelming. >> reporter: new york has the largest marathon in the world and for many today, an enormous source of information. ron allen, nbc news, new york. >>> when "nbc nightly news" continues this sunday, the shopping wars. the unusual steps some malls are taking this holiday season as online competition heats up. >>> and later, maintaining the memory of jfk. the woman in charge of the eternal flame. [ male announcer ] coughequence #10. speechless. so here's to the bride and... [ coughs ] [ all gasp ] [ male announcer ] robitussin dm max now comes in a new liquid-filled capsule. nothing provides more powerful cough relief. robitussin. don't suffer the coughequences. nothing provides more powerful cough relief. medicare open enrollment.gain. time to compare pla